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A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. "he coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s?) (c) At this angle, how fast will the box be moving after it has slid 5.0 m along the loading ramp? (Ans: 3 m/s)

A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. "he coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s?) (c) At this angle, how fast will the box be moving after it has slid 5.0 m along the loading ramp? (Ans: 3 m/s)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. The coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s³) (c) At this angle, how fast will the box be moving after it has slid 5.0 m along the loading ramp? (Ans: 3 m/s)
Transcribed Image Text:A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. The coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s³) (c) At this angle, how fast will the box be moving after it has slid 5.0 m along the loading ramp? (Ans: 3 m/s)
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